<template>
  <div class="play">
    <!-- 模糊背景(靠样式设置), && 有属性继续用, 固定定位 -->
    <div
      class="song-bg"
      :style="{
        'background-image': `url(${detailsList.al.picUrl})`
      }"
    ></div>
    <!-- 播放页头部导航 -->
    <div class="header">
      <van-icon
        name="arrow-left"
        @click="$router.go(-1)"
        size="20"
        class="left-incon"
      />
    </div>
    <!-- 播放页内容容器 -->
    <div class="song-wrapper" :class="{ play: isPlay }">
      <div class="song-turn ani">
        <div class="song-img">
          <!-- 封面 -->
          <img style="width: 100%" :src="detailsList.al.picUrl" alt="" />
        </div>
      </div>
      <!-- 播放盒子 -->
      <div class="start-box">
        <span class="song-start" @click="doClick" v-show="true"></span>
      </div>
      <!-- 歌曲信息 -->
      <div class="song-msg">
        <h2 class="m-song-h2">
          <span class="m-song-sname">{{ detailsList.name }}</span>
        </h2>
        <div class="arContent">
          <p class="ar">
            {{ detailsList.ar[0].name }}
          </p>
        </div>
      </div>
      <!-- 操作杆 -->
      <div class="needle"></div>
    </div>
    <!-- 播放音乐真正的标签
      看接口文档: 音乐地址需要带id去获取(但是有的歌曲可能404)
     -->
    <audio
      ref="audio"
      preload="true"
      :src="
        `https://music.163.com/song/media/outer/url?id=${$route.query.id}.mp3`
      "
    ></audio>
  </div>
</template>

<script>
export default {
  name: "play",
  data() {
    return {
      isPlay: false,
      detailsList: []
    };
  },
  created() {
    this.$axios({
      url: "/song/detail",
      method: "get",
      params: { ids: this.$route.query.id }
    }).then(res => {
      //成功回调
      console.log(res);
      this.detailsList = res.data.songs[0];
    });
  },
  methods: {
    doClick() {
      if (this.isPlay) {
        this.$refs.audio.pause();
        this.isPlay = false;
      } else {
        this.$refs.audio.play();
        this.isPlay = true;
      }
    }
  }
};
</script>

<style scoped lang="less">
.header {
  height: 50px;
}
.play {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
}
.song-bg {
  background-color: #161824;
  background-position: 50%;
  background-repeat: no-repeat;
  background-size: auto 100%;
  transform: scale(1.5);
  transform-origin: center;
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  height: 100%;
  overflow: hidden;
  z-index: 1;
  opacity: 1;
  filter: blur(25px);
}
.song-bg::before {
  content: " ";
  background: rgba(0, 0, 0, 0.5);
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
}
.song-wrapper {
  position: fixed;
  width: 247px;
  height: 247px;
  left: 50%;
  top: 50px;
  transform: translateX(-50%);
  z-index: 10001;
  &.play {
    .needle {
      transform: rotate(-7deg);
    }
    .song-turn {
      animation-play-state: running;
    }
  }
}

.song-turn {
  width: 100%;
  height: 100%;
  background: url("../assets/bg.png") no-repeat;
  background-size: 100%;
}
.start-box {
  position: absolute;
  width: 156px;
  height: 156px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  justify-content: center;
  align-items: center;
}
.song-start {
  width: 56px;
  height: 56px;
  background: url("../assets/start.png");
  background-size: 100%;
}
.needle {
  position: absolute;
  transform-origin: left top;
  background: url("../assets/needle-ab.png") no-repeat;
  background-size: contain;
  width: 73px;
  height: 118px;
  top: -40px;
  left: 112px;
  transition: all 0.6s;
  transform: rotate(-38deg);
}
.song-img {
  width: 154px;
  height: 154px;
  position: absolute;
  left: 50%;
  top: 50%;
  overflow: hidden;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}
.m-song-h2 {
  margin-top: 20px;
  text-align: center;
  font-size: 18px;
  color: #fefefe;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.arContent {
  margin-top: 20px;
}
.ar {
  font-size: 14px;
  color: #fff;
  text-align: center;
}
.left-incon {
  position: absolute;
  top: 10px;
  left: 10px;
  font-size: 24px;
  z-index: 10001;
  color: #fff;
}
.ani {
  animation: turn 5s linear infinite;
  animation-play-state: paused;
}
@keyframes turn {
  0% {
    -webkit-transform: rotate(0deg);
  }
  100% {
    -webkit-transform: rotate(360deg);
  }
}
</style>
